JPS64963Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an improvement of a rotary evaporator in which a sample container can be easily attached and detached.

[Prior Art] Generally, in the case of a rotary evaporator, a sample container such as a flask attached to a mounting part of a rotary drive device is rotated in a heating device such as a water bath or an oil bath while heating the sample inside the sample container. There is a growing trend towards distillation.

The sample container can be attached to and removed from the attachment part of the rotary drive device so that the sample can be collected and washed. As a mounting structure for this sample container, for example, as shown in FIG. 4 and FIG.
A plurality of fasteners 111 are provided on the rotating flange 105 of 03 in the radial direction, each consisting of a screw rod 107 rotatable in the direction of the arrow and a wing nut 109 screwed onto the threaded portion of the screw rod 107.

On the other hand, an engagement groove 115 is provided at the mouth of the sample container 113 and engages with the threaded rod 107 of the fastener 111.
The structure is such that a mounting flange 117 having a diameter is attached to the mounting flange 117.

[Problems with the prior art] In such a structure, for example, the sample container 113
To attach the sample container 113, align the engagement groove 115 of the mounting flange 117 with the screw rod 107 of the fastener 111, rotate the screw rod 117 in the direction of the arrow, and then tighten the wing nut. Make sure to tighten 109. That is, a series of attachment and detachment operations from positioning the engagement groove 115 to tightening the wing nut 109 are performed while holding the sample container 113.

In particular, as the rotary evaporator becomes larger, the sample container 113 also becomes larger, and the sample alone becomes approximately
Since it is a large-capacity type containing 10 samples, it is dangerous to drop it, and it also requires two people to install and remove the sample container 101, which is very troublesome.

Therefore, the object of this invention is to provide a rotary evaporator that allows one person to easily and safely attach and detach a sample container due to the increase in size.

[Means for Solving the Problems] In order to achieve the above object, this invention includes a rotary drive device supported by a main body to which a condenser is attached and having a container mounting portion, and a rotary drive device having a container mounting portion. A sample container is detachably mounted, a water bath is provided below the sample container and includes a detachable sample container support member, and a water bath is installed in the main body and allows lifting or lowering of either the sample container or the water bath. The structure consists of a lifting and lowering device.

[Function] In such a configuration, for example, in order to attach a sample container, place the container on the sample container support member,
Next, by raising or lowering either the sample container or the rotary drive device, the sample container or the rotary drive device is positioned with respect to the container mounting portion and then fixed.

[Embodiment] Hereinafter, an embodiment of this invention will be described in detail with reference to FIGS. 1 to 3.

In the figure, reference numeral 1 indicates a main body, and a rotation drive device 5 having a container attachment part 3 is attached to the main body 1.

A condenser 9 and a receiving flask 11 are connected to the rotation drive device 5 via a connecting pipe 7. Further, a sample container 13 is attached to the container attachment portion 3 on the opposite side.

The sample container 13 is shaped like a flask and has a mouth part 1.
A mounting flange 19 having a plurality of engagement grooves 17 is attached to the mounting flange 5 .

The container attachment part 3 has a rotating flange 2 whose rotation is controlled by a control part 21 built into the main body 1.
3, a screw rod 25 rotatably supported on the flange 23 in the direction of the arrow, and a wing nut 27 screwed into the threaded portion of the screw rod 23.
is fitted within the engagement groove 17 of the mounting flange 19.

On the other hand, a water bath 31 is disposed below the sample container 13 and is movable up and down by a lifting device 29.

The lifting device 29 includes a lift arm 33 that protrudes from the opening 1a of the main body 1 and has a water bath 31 mounted thereon, and a control section 21 attached to the arm 33.
The base of the lift arm 33 includes a drive unit 43 consisting of a transmission motor 35 that can be forward or reversed by a control switch, and a reduction mechanism 41 that decelerates the rotational power of the motor 35 and transmits it to a pinion gear 39 that meshes with the rack 37. The guide rod 47 has a penetrating end portion 45, and both upper and lower ends of the guide rod 47 and the rack 37 are fixedly supported by the main body 1 via brackets 49, 49.

Further, a sample container support member 51 which also serves as a lid of the water bath 31 is detachably attached to the water bath 31, and the center portion of the support member 51 has a positioning recess 53 on which the bottom of the sample container 13 is placed.
is formed.

In the rotary evaporator configured in this way, in order to attach the sample container 13,
As shown in FIG. 2, the bottom of the sample container 13 is placed on the sample container support member 51 attached to the water bath 31. Next, the mounting flange 19 of the sample container 13
Positioning is performed by raising the water bath 31 to a position where it faces the container attachment part 3. In this case, since the sample container 13 is supported, the screw rod 25 and the engagement groove 17 can be easily aligned. After alignment, the screw rod 25 is engaged into the engagement groove 17, and the wing nut 27 is tightened to complete the installation.

After the sample container 13 is attached, the water bath 31 is lowered slightly and the sample container support member 51 is removed, so that it can be used as the original water bath 31 as shown in FIG.

Note that when removing the sample container 13, the water bath 31 with the sample container support member 51 attached is
The mounting flange 19 is separated from the container mounting portion 3 by raising the recess 53 until it touches the bottom of the sample container 13 and setting it in a supported state, and then removing the threaded rod 25.

[Effects of the invention] As explained above, according to the rotary evaporator of this invention, a series of mounting operations from positioning the sample container to the container mounting portion to mounting the sample container can be performed while the sample container is supported by the sample container support member. Because it is carried out by one person, the operation of attaching and detaching the sample container due to the increase in size can be carried out safely and easily by one person.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing the rotary evaporator of this invention, Fig. 2 is a cutaway front view with the sample container removed, Fig. 3 is a perspective view of the whole, and Fig. 4 is a rotary evaporator of the conventional example. A front view of the evaporator, and FIG. 5 is an enlarged view showing the mounting portion of the sample container same as above. Explanation of main drawing symbols, 1... Main body, 3... Container attachment part, 5... Rotation drive device, 9... Condenser, 13... Sample container, 29... Lifting device, 31... Water bath,
51...Sample container support member.

Claims (1)

[Scope of utility model claims] A rotary drive device supported by a main body to which a condenser is attached and has a container attachment part, a sample container detachably attached to the container attachment part, and a detachable sample container support disposed below the sample container. A rotary evaporator comprising a water bath provided with members, and a lifting device installed in the main body for raising and lowering either the sample container or the water bath.